My first Interview

Since i was not much comfortable with Algorithms that time, I prepared Algo's for the last two days. Automata, Computer Organization and Networking are my other favorite subjects. As my last minute preparation i decided to say my favorite subject as Automata, Algo's, Organisation if i was asked about that during the interview, since i thought if i say Algo's second in the list he will ask some what easy questions. I decided to say Autoamta first because i thought there nothing much for him to ask in Automata.
It started with intro session, he introduced himself, followed by my introduction. As i expected he asked me what are your favorite subject. I have told him. Thought things are going as i expected. To my surprise he asked me some high fundae Automata question which i never expected. My voice dropped taking my confidence down, i tried to answer in a low voice so that he will change to algo's, At one point of time i told i was not able to do, but he gave me clues and and encouraged me that i can do. Finally i answered it (I thought answer i gave was wrong, but it turned out to be right answer) . I am trying to explain the answer in a low voice, waiting for him to change the topic. But something unexpected happened, he said,

"We are running out of time so we can stop here. Ask me if if u have any questions"

Then i thought i lost the jackpot as i had not performed that well. I inquired others about their interviews and i thought i was out. But what happened is not the same......